/* Copyright (c) 2001-2008, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb.types;
import org.hsqldb.lib.ArrayUtil;
import org.hsqldb.lib.StringConverter;
/**
* Java representation of a BINARY field value. <p>
*
* A Binary object instance always wraps a non-null byte[] object; all
* NULL SQL field values are represented internally by HSQLDB as Java null.
*
* @author fredt@users
* @version 1.7.2
* @since 1.7.2
*/
public class Binary {
private byte[] data;
int hash;
/**
* This constructor is used inside the engine when an already serialized
* byte[] is read from a file (.log, .script, .data or text table source).
* In this case clone is false.
*
* When a byte[] is submitted as a parameter of PreparedStatement then
* clone is true.
*/
public Binary(byte[] data, boolean clone) {
if (clone) {
data = (byte[]) ArrayUtil.duplicateArray(data);
}
this.data = data;
}
public byte[] getBytes() {
return data;
}
public byte[] getClonedBytes() {
return (byte[]) data.clone();
}
public int getBytesLength() {
return data.length;
}
public boolean equals(Object other) {
if (other == this) {
return true;
}
if (!(other instanceof Binary)) {
return false;
}
if (data.length != ((Binary) other).data.length) {
return false;
}
return ArrayUtil.containsAt(data, 0, ((Binary) other).data);
}
public int hashCode() {
int h = 0;
if (hash == 0) {
for (int i = 0; i < data.length; i++) {
h = 31 * h + data[i];
}
hash = h;
}
return hash;
}
public String toString() {
return StringConverter.byteToHex(data);
}
}